In her most pointed criticism of the legislation that’s now on track for Senate passage, the California Democrat said she wished that Senate and House lawmakers who crafted the fast-track bill had tailored it more narrowly to the pending Trans-Pacific Partnership and not any future trade deals.

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“This is not a TPA for the Trans-Pacific Partnership, a fast-track just for the Pacific bill. … It is effectively a six-year, I don’t want to say ‘get out of jail free’ but it’s something to that effect, a ‘carte blanche,’” Pelosi said at her weekly news conference.

House Democrats have significant issues with the trade promotion authority, or TPA, bill and the larger Trans-Pacific Partnership deal. Pelosi has repeatedly said she is searching for a “path to yes,” but the vast majority of her caucus is expected to oppose TPA when it comes to the floor.

Fewer than 20 Democrats are believed to currently back Obama on the bill. The administration is expected to lobby aggressively over the next several weeks to increase those numbers. The massive trade agreement is at the top of the president’s second-term domestic agenda.

Still, Pelosi didn’t rule out supporting TPA on Thursday. But she said she is waiting to hear from the White House on a series of concerns Democrats have raised concerning labor standards and currency.

“While three years in the Trade Promotion Authority bill may be appropriate for foreseeable trade agreements, there is unease with a process that would provide carte blanche for agreements unknown, for countries to be determined, for a time in perpetuity,” Pelosi said later Thursday in a statement. “This is just one of the concerns members have with the TPA before the Senate. We hope this legislation will be improved in the amendment process.”